Matt,

Welcome to NeuroTalk. Sorry to hear about your headaches.

I'm surprised you did not get better advice. I've read the UK rugby has been struggling with how to address concussion but they do recognize the need to take action. They have been resistant or slow to get with the program.

What diagnostics have you had ?

What kind of treatment did the chiro do ?

What are your days like ? What do you do ?

Have you had your eyes assessed by a behavioral optometrist ?
Go to BABO | British Association of Behavioural Optometrists to find one.

Convergence issues can cause headaches.